what the hell is a nug i keep hearin people say it but i dunno what it means. im good on most other words its just this one i got trouble with.
1 Improper use of contact lenses or steroid eyedrops can lead to fungal infections, which in turn can cause corneal ulcers. Also, a corneal injury that results in plant material getting into the eye can lead to fungal keratitis.  Acanthamoeba are microscopic, single-celled amoeba that can cause human infection.
In some of the cases, Herpes zoster ophthalmicus targets and erodes the cornea, resulting in the development of a corneal ulcer. This type of ulceration intensifies irritation in the eye, makes vision blurry and accentuates redness in the white portion of the eye (conjunctiva).